<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            width: 300px;
            height: 300px;
            background-color: #d56262;
            box-shadow: 10px 12px 10px rgb(40, 136, 225);
            /*第一个值为水平位移*/
            /*2为垂直位移*/
            /*3为模糊半径*/
            /*4为扩散半径*/
            /*5为颜色*/
        }
    </style>
</head>
<body>
    <div>

    </div>
</body>
</html>